The four spacers around the glowing core should get some more surface detail/color.
The glow map itself should not include the bleed/bloom of light (just like with the telenode – the engine will do this for us), so the lines should be more clearly defined.
A third base color might be nice for some more details on the body (for example on the bent sheet of metal that is bolted onto the main body, that element next to it that is shaped like a divining rod or on parts of the spacers I mentioned before).
Good improvment! I still feel the four spacers around the core are lacking some sort of surface detail, apart from that I think we're pretty much done here.
No, it can't rotate. The reactor does and so will the repeater, the drill needs to stay visually distinct. I guess it will just have a pulsating light.
By the way Warvinc, if you manage to finish it over the next few days, we can include the model in the coming release. If not, don't worry, it'll be in the following one.